Q: Can a Solatube Daylighting System be installed horizontally?

Yes. Optional Spectralight ® Infinity 0-90 Degree Tubing creates up to 90-degree angles and allows the light to run horizontally. You can even achieve multiple 90-degree turns in the same tube run. CAD drawings are available on the Technical Resources page of our manufacturer's website.

Q: Are Solatube Daylighting Systems maintenance-free?

The Solatube ® Daylighting System features passive daylighting technology that does not rely on moving parts, making it virtually maintenance-free. All assemblies (dome, flashing, tubing, diffuser) have seals to prevent bug and dirt infiltration. In addition, the dome and flashing are designed to eliminate debris build-up. Unlike traditional skylights, that need periodic cleaning and inspection, the Solatube Daylighting System does not require ongoing maintenance.

Question 1

What is the ultraviolet (UV) and infrared (IR) impact of installing a Solatube Daylighting System?

Accepted Answer

A Solatube gives you natural daylight while blocking the parts of sunlight you do not want indoors. The dome blocks essentially all of the sun's ultraviolet rays, 100 percent of UVB and UVC and about 98.5 percent of UVA, so you get the light without the UV that fades floors and furniture or burns skin the way a plain window can. The SpectraLight Infinity tubing also blocks most of the infrared, which is the heat in sunlight, removing more than half of it with every bounce down the tube. That keeps the room cooler and eases the load on your air conditioner compared to a glass skylight. Two practical notes: because it blocks UVB, a Solatube will not produce vitamin D indoors, and because it removes most of the heat while still passing visible light, it works well for most indoor plants, depending on each plant's own light needs.

Question 2

What kind of roofs can Solatube tubular skylights be installed on?

Accepted Answer

Solatube systems can be installed on virtually any roof type, including asphalt shingle, metal, flat roofs, tile, slate, and more. Each system comes with custom-engineered flashing kits to ensure a weather-tight seal.

Question 3

Are Solatube tubular skylights hurricane-rated?

Accepted Answer

Yes. Solatube tubular skylights are fully approved under the Florida Building Code and certified for High-Velocity Hurricane Zones. They also carry approvals from the Texas Department of Insurance and comply with major structural and impact standards.

Question 4

Are Solatube tubular skylights better than Velux sun tunnels?

Accepted Answer

In head-to-head comparisons, Solatube tubular skylights typically deliver brighter, more consistent natural light. Solatube is also approved for Florida’s High-Velocity Hurricane Zones and includes customizable features like daylight dimmers, ventilation kits, and decorative fixtures. Velux does offer good products but focuses less on tubular daylighting as its core innovation.

Question 5

What makes Solatube brighter than other tubular skylights?

Accepted Answer

Solatube systems use Spectralight Infinity Tubing, which offers 99.7 percent reflectivity. Most competitors use aluminum-based tubing that reflects around 90 to 95 percent, causing significant light loss over longer runs. Solatube’s advanced optics, including Raybender 3000 and LightTracker Reflector, capture more light and deliver it evenly into your home.

Question 6

Do skylights make your house hot?

Accepted Answer

Homeowners are always looking for ways to improve their living areas and want to bring a freshness to rooms that may seem to be lacking a special something. A starting point is also making sure your home or rooms are well lit for yourself and your guests. Sometimes all a room may need is a glimmer of natural light and a perfect option for this is by installing skylights throughout the home.

You may ask though since the skylights are bringing in a lot of natural light, will they make the rooms they're located in hot?

No. Even though natural light carries heat in the form of infrared radiation, the technology used in your skylight will determine the effects of the incoming light into your home. Skylights are Energy star rated and don't allow heat or UV rays into the home which will save your furniture from fading.

There are a few things to consider when weighing in on how your skylight will perform in your home:

Size and Positioning of the skylight
Size of your home
Protective coating and glazing
Insulation

Our Certified and Expert Installation Consultants will help you identify these factors and give you the information you need to help you decide what skylight improvements or upgrades are the best fit for your home.

Question 7

Can a Solatube Daylighting System be installed horizontally?

Accepted Answer

Yes. Optional Spectralight^® Infinity 0-90 Degree Tubing creates up to 90-degree angles and allows the light to run horizontally. You can even achieve multiple 90-degree turns in the same tube run.

CAD drawings are available on the Technical Resources page of our manufacturer's website.

Question 8

What is the approximate light coverage of a Solatube Daylighting System?

Accepted Answer

For Residential applications

The light coverage area varies among our Solatube® Daylighting System models. Keep in mind different light levels are required for different tasks. As a result, the approximate coverage areas are shown below for ambient light levels.

Solatube Daylighting System 160 DS (10 in. / 250 mm) up to 200 sq. ft (19 sq. m)
Solatube Daylighting System 290 DS (14 in. / 350 mm) up to 300 sq. ft (28 sq. m)

These estimated lighting areas are based upon an average 6 ft (1.82 m) tube length and 8 ft (2.4 m) ceiling height with the dome in direct sunlight.

Light output will vary depending on the intensity of the sun. For example, there will be more natural daylight at midday than in the early morning or evening. Light output may also decrease as the tube length increases beyond the recommended distances.

*applies only to daylighting portion of the system

For Commercial applications

Please consult a Solatube Commercial Representative as acceptable illuminated areas will vary greatly due to ceiling heights and space uses. Our commercial experts are well-versed in application-specific Solatube design and light analysis for both new and retrofit projects.

Question 9

Are Solatube Daylighting Systems maintenance-free?

Accepted Answer

The Solatube^® Daylighting System features passive daylighting technology that does not rely on moving parts, making it virtually maintenance-free. All assemblies (dome, flashing, tubing, diffuser) have seals to prevent bug and dirt infiltration. In addition, the dome and flashing are designed to eliminate debris build-up. Unlike traditional skylights, that need periodic cleaning and inspection, the Solatube Daylighting System does not require ongoing maintenance.

Question 10

Can Solatube tubular skylights be used in cloudy weather?

Accepted Answer

Yes. Solatube’s patented optics are designed to capture and redirect low-angle or diffused light, so you still benefit even on overcast days. Competing tubular skylights often struggle in low-light conditions due to less advanced dome and reflector designs.

Question 11

Is there a way to turn off or "block out" a Solatube Daylighting System?

Accepted Answer

Yes, the Solatube Daylight Dimmer add-on helps control the amount of natural light entering a room. Utilizing a patented butterfly baffle design and a convenient wall-mounted switch, it allows the user to adjust light levels simply and easily anywhere between 100% and 2% daylight. It’s perfect for bedrooms, family rooms, and home offices. The Daylight Dimmer is available for the Solatube Daylighting System 160 DS and 290 DS. The Daylight Dimmer can also be integrated with an overall lighting control system.

Question 12

Can Solatube Daylighting Systems be installed in a shower?

Accepted Answer

Yes, but there are potential issues with this type of application. Due to the excess moisture present in the shower environment, condensation may occur. Since the accumulation of moisture is a natural occurrence, it is not covered under the manufacturer’s warranty. To minimize condensation, proper ventilation is crucial. In addition, using the Solatube^® Natural Effect Lens is recommended to reduce the air exchange between the shower and the inside of the tubing.

For more information about our warranty, visit the Product Registration page in the Support section of our website.

Question 13

Can a Solatube Daylighting System be used for multi-story applications?

Accepted Answer

Yes. As long as there is space for the tube run, a Solatube^® Daylighting System can run from the roof to lower floors. See product pages for maximum recommended tube lengths. In addition, a chase or enclosure is usually built around the tubing for added protection.

Question 14

Can I split the tubing and light two rooms from only one dome?

Accepted Answer

No. To transfer the most light possible to your interior, Solatube^®, Inc. International uses a 1-to-1 product design that matches the dome to the diffuser. There is no "Y" tubing adapter available for Solatube Daylighting Systems that connects two diffusers to one dome.

Question 15

How does a Solatube Daylighting System work?

Accepted Answer

From sunup to sundown, the Solatube^® Daylighting System captures the sun’s rays using an optical dome mounted on the roof. The light is then transferred downward through proprietary Spectralight^® Infinity, the world’s most reflective tubing. Designed for minimal light loss, it also easily maneuvers around obstructions with no structural changes required. When the light reaches the interior, it is delivered evenly throughout the space through specially designed Solatube diffusers and/or Decorative Fixtures.

Question 16

How durable is the Solatube Daylighting System?

Accepted Answer

Solatube^® products are manufactured using the highest quality materials, so they are extremely durable and designed to last. All Solatube Daylighting System components (excluding electrical components) are covered by 10-year warranty. A multitude of Solatube products have been in operation for more than 20 years and continue to perform exceptionally.

We have specific product configurations that can meet High Velocity Hurricane Zone requirements as well as OSHA fall protection standards and military anti-terrorism blast requirements.

Question 17

How does a Solatube Daylighting System compare to a traditional skylight?

Accepted Answer

Both have their place, but a Solatube tubular skylight has a few real advantages over a traditional skylight. It can go in far more locations, since the tube bends around rafters and ductwork to reach rooms a boxed in skylight never could. It installs faster and at lower cost, with no structural changes to your roof or ceiling. It handles heat far better, so you get the daylight without the heat gain a glass skylight brings. And the light it delivers stays consistent and comfortable through the day, with fixtures you can choose to match the room. A traditional skylight gives you a direct view of the sky, but for bright, even, low heat daylight in almost any room, the Solatube is usually the better fit.

Learn more here: Tubular vs. Traditional Skylights

Question 18

On what roof types can Solatube Daylighting Systems be installed?

Accepted Answer

Solatube^® Daylighting Systems can be installed on practically any roof type. We offer numerous roof mount options for both self-mounted and curb-mounted applications. For details, see our Product Selection Guides for residential and commercial applications.

Question 19

Do Solatube tubular skylights leak?

Accepted Answer

When a Solatube tubular skylight is installed correctly with the proper flashing and roof seal, it shouldn't leak. Solatube Daylighting Systems are engineered with roof specific flashing, integrated curb systems, and weather sealing designed to handle normal rain, wind, and roof movement.

Leaks typically occur only when a roof penetration is installed incorrectly, or when older systems have flashing that no longer matches the roof condition; that's why professional installation matters. A trained installer ensures the flashing matches the roof type, the roof pitch is correct for the model, and all seals are properly integrated with the roofing material.

Like any roof penetration, tubular skylights should be inspected if the roof is replaced or repaired. When installed and maintained properly, a Solatube tubular skylight system does not create an ongoing leak risk.

Question 20

Are tubular skylights easy to install for retrofit projects while maintaining a watertight roof connection?

Accepted Answer

Yes, tubular skylights are specifically designed to be easy to install in retrofit projects while maintaining a watertight roof connection.

A retrofit installation involves adding a skylight to an existing roof instead of during the construction. Tubular skylights are ideal for this because they require only a small roof opening and minimal structural modification. The flexible tubing helps avoid attic obstacles, so installation doesn't require a framed curb or significant alterations to rafters.

For watertight performance, the key factor is the integrated flashing system. Solatube Daylighting Systems use roof-specific flashings that are engineered to match roof type and pitch. During retrofit installation on an asphalt shingle roof, the flashing slides under the upper shingle courses and over the lower ones. This preserves the roof’s natural water-shedding design instead of interrupting it.

Because the flashing, dome, and seals are designed as a complete system, installers are not fabricating waterproofing details on site. That reduces installation complexity and lowers the risk of leaks.

In short, tubular skylights are one of the most retrofit-friendly daylighting options available. When the correct flashing kit is selected for the existing roof and installed according to manufacturer specifications, they provide a secure, watertight connection without major roof reconstruction.

Question 21

What if there is no attic or plenum space?

Accepted Answer

Solatube® Daylighting Systems feature unique telescoping tubes that can be easily installed even when access to the attic or plenum is limited or there is no space between the ceiling and roof at all. We can also install most products in an open ceiling application where no ceiling exists and the underside of the roof deck is exposed.

One exception to this is the Solatube Smart LED™ System, which requires a minimum height of 16 in. (406 mm) between the base of the ceiling and the roof line. With the Solatube SolaMaster® Series 330 DS-C and 750 DS-C units, the transition box requires approximately a 12 in. (305 mm) depth between the ceiling and the roof.

We recommend you consult your local Solatube daylighting expert for specific details.

Question 22

Can I install Solatube products myself?

Accepted Answer

For residential applications

While Solatube^® Daylighting Systems and Solar Star® Attic Fans are engineered for easy installation, you’ll get the best results when you hire a professional who has been factory-trained and certified to install our products. When arranging installation, we recommend you hire a Solatube Premier Dealer who is licensed, bonded and factory-trained on Solatube products to ensure a proper install and protection from unforeseen circumstances.

A general contractor, roofer or local building material supplier may also be able to assist you.

As a homeowner, we recommend installing it yourself only if you have the proper tools and training, and are comfortable making a roof penetration.

For commercial applications

For commercial applications, we recommend a Solatube International Commercial Distributor who has been factory-trained on all Solatube products. They can offer design assistance and/or installation services / training. Coordination with a general contractor or roofer may be required depending on the scope of the project.

Question 23

How do I remove my Solatube Daylighting System diffuser or Decorative Fixture?

Accepted Answer

For Residential applications

Your Solatube^® diffuser or Decorative Fixture is quite easy to remove and clean. Please note that Solatube Daylighting Systems manufactured before 2000 have twist-lock diffusers for the 10 in. (250 mm) and 14 in. (350 mm) models. For these older units, the diffuser twists off counterclockwise when looking up at the diffuser.  If you have a unit that was manufactured between 2000 - 2007, simply pry down one edge of the white trim ring using something flat like a butter knife. Continue to work your way around the ring until you have a 1/4 in. (7mm) or so gap all the way around. Then simply grab onto the edges and pull straight down. The diffuser lens can be cleaned with soap and water. To re-install the diffuser, position the four zip ties into the four holes on the ceiling ring and push up until the diffuser is flush with the ceiling.

If you have a unit that was manufactured between 2007 - 2010, simply pull the diffuser straight down.

If you have a diffuser or Decorative Fixture that was purchased after September 2010, you'll need to twist off the diffuser counterclockwise.

For the QuadraFrost™ and AuroraGlo™ Decorative Fixtures, simply rotate the screws located on the sides of the fixture counterclockwise to release. Make sure to support the underside of the fixture when releasing it from the ceiling.

For Commercial applications

For Solatube BrightenUp^® Series or Solatube Smart LED™ Systems, see instructions above for removing a diffuser or Decorative Fixture.

For the SolaMaster^® 330 DS-C and 750 DS-C, remove the diffuser by releasing the tabs on the diffuser frame from the transition box. For the Solatube SolaMaster Series 330 DS-O and 750 DS-O, find the four raised lines on the plastic trim of the diffuser. This indicates where the tube notches are that hold the diffuser in place. Depress above the raised lines to disengage the diffuser from the notches.

For the Solatube SkyVault® Series, first remove the tube belt above the diffuser. Next, lift and untwist the diffuser to unlock it from the Tab-Lock Connection System.

Important note: When removing any diffuser, keep all seals in place to insure proper reassembly. See installation instructions for reattaching diffuser in the Technical Resources section of our website.

Question 24

What length can the tube be?

Accepted Answer

To achieve optimal light output in spaces that require long tube runs, we recommend using tube lengths no longer than those listed below:

Solatube® Brighten Up® Series: Solatube 160 DS (10 in. / 250 mm) - 20 ft (6m)
Solatube Brighten Up Series: Solatube 290 DS (14 in. / 350 mm) - 30 ft (9m)
Solatube Smart LED™ System: (10 in. / 250 mm) - 20 ft (6m)
Solatube SolaMaster® Series: Solatube 330 DS and 750 DS (21 in. / 530 mm) - 50 ft (15m)
Solatube SkyVault® Series: M74 DS (29 in. / 740 mm) - 100 ft (30m)

For tube runs exceeding 15 ft in length or running horizontally, we recommend the addition of suspension wires for support.

In short tube runs, there is no minimum length for the Solatube Brighten Up Series. The tubing may simply need to be modified to fit the space. This can be done easily by telescoping or cutting the tubing to the desired length. With the Smart LED System, the minimum length is 16 in. to accommodate the Amplifier. For SolaMaster 330 DS-C or 750 DS-C, a minimum depth of 12 in. is required to accommodate the transition box. For most open ceiling applications, the tube can be cut or telescoped to make the diffuser flush with the underside of the roof deck or to lower the diffuser to the desired height.

For Solatube SkyVault M74 DS applications, the Tab-Lock Connection System dictates that the tubes are set to designated lengths. Curb height can be manipulated to affect diffuser position.

Keep in mind that, for a short tube run, creating tube angles may not be possible.

Question 25

Will a Solatube Daylighting System work in hot climates like Florida?

Accepted Answer

Yes, Solatube® Daylighting Systems work especially well in hot climates. All of our Daylighting Systems feature Spectralight® Infinity Tubing. This transmits the visible spectrum of light (400 to 760 nanometers), but provides significant blockage of infrared wavelengths greater than 900 nm, which is the main culprit in solar heat gain.

Additionally, the dome ring in the Solatube 160 DS/ISn and Solatube 290 DS/ISn acts as a thermal break between the flashing and tubing to prevent external heat from entering an interior space.

Also, the Raybender® 3000 Technology featured in many of our products helps to reject overwhelming light and heat when the sun’s rays are most intense.

These technologies allow Solatube Daylighting Systems to provide the highest light output performance with minimal thermal impact.

Question 26

Can Solatube Daylighting Systems tolerate very heavy rain?

Accepted Answer

Yes, all Solatube^® Daylighting Systems are designed with features that prevent water from entering the system. The round shape of the domes themselves prevent water from collecting on the surface.

In addition, the circular and seamless, one-piece design of the self-flashing systems allows rain runoff to naturally flow past the daylighting system. As a result, the flashing has no weak points that could separate and allow water to enter. However, an optional turret extension may be added to raise the dome above the roof deck where required.

For curb-mounted applications, the height of the curb would raise the dome sufficiently to avoid any rain runoff. The curb itself (made by others) would typically incorporate a water diverter (cricket) for sloped roof applications.

Question 27

What happens on a cloudy day?

Accepted Answer

A Solatube still brings in daylight on a cloudy day. The RayBender 3000 and LightTracker technology in the dome, together with the SpectraLight Infinity tubing, capture and carry as much of the available light as possible down into the room, even when the sky is gray. Keep in mind that the light you get out always depends on the light coming in, so a heavy overcast day will be noticeably dimmer than full sun. What stays the same is the quality: the diffuser spreads the light evenly no matter how bright or soft it is, so the room never looks patchy.

Question 28

Will a Solatube Daylighting System work in cold climates and northern latitudes?

Accepted Answer

Our products feature dome optics that help collect low-angle sunlight, which is extremely important in northern latitudes. As a result, Solatube^® Daylighting Systems have performed successfully in cold weather climates like the Northern U.S.A., Canada, and Northern Europe for more than 20 years.

Question 29

Are there any issues with leaks?

Accepted Answer

Solatube skylights are designed to be leak-proof. Their low-profile, sealed dome design and seamless flashing options are engineered for all major roof types, including tile, metal, and shingle. Many competitor skylights rely on traditional seals that may degrade over time and are more prone to leaks.

Question 30

What happens on full moon nights?

Accepted Answer

The Solatube® Daylighting System captures ambient light so well that you can actually see a nice glow from your fixture on full-moon nights. If you prefer, you always have the option to add a Solatube Daylight Dimmer to block out unwanted light.

Question 31

What happens if the dome gets covered with snow?

Accepted Answer

When just the roof is covered with snow, it may actually increase light output as the white snow makes the roof more reflective. When the dome itself is covered with snow, light output will be reduced but the dome will continue to perform. Tests have indicated that all Solatube® Daylighting System models can resist positive snow loads up to 150 pounds per square foot. For more information and to review the CCRR test report, click here.

Question 32

How can condensation be managed?

Accepted Answer

Condensation in homes or buildings is mainly a winter problem. It occurs most frequently in areas where warm, moist air is generated and allowed to penetrate to colder parts of the building. A number of activities can produce moisture, including cooking, bathing, washing dishes and/or clothes, heating, and humidifying. Condensation may be more severe in buildings with inadequate ventilation.

In Solatube^® Daylighting Systems, condensation can occur when warm, moist air enters the tubing or the space between the flashing or curb cavity. If this happens, it’s likely that moisture is also present around or on other building elements, such as windows, doors and skylights.

While condensation cannot be eliminated entirely, Solatube International has made design changes to its daylighting systems over the years to reduce its occurrence. The current systems are designed to allow warm, moist air to escape at the dome level while preventing air infiltration in the tube run and at the diffuser level. Modifying your system with a Dome Upgrade Kit, Flashing / Curb Insulator, Effect Lenses, Severe Climate Glazing, or Curb Cap Insulation Kit may also help, but your local Solatube International, Inc. expert is best-suited to determine if these improvements or other changes will help minimize condensation in your Solatube Daylighting System.

Due to the numerous contributing factors to condensation in a home or building, Solatube International, like most window and skylight companies, does not cover it under the manufacturer's warranty. As such, please be aware that there may be a charge for the service call and/or additional parts needed to upgrade your system.

Question 33

How much does a Solatube Daylighting System cost?

Accepted Answer

The cost of a Solatube Daylighting System depends on a few things, so there is no single price. The main factors are the model you choose, your roof type and pitch, how long the tube run needs to be and how many angles it takes, and any add ons like a Daylight Dimmer or tube extensions. Your location plays a part as well. The best way to get a real number for your home is a free in home estimate, where we can look at the roof and the rooms and price it exactly.

Question 34

What is the expected battery life?

Accepted Answer

The expected battery life is two years under normal duty cycle.

Question 35

How quiet is the Solatube Ventilation Add-On Kit and does it have a sones rating?

Accepted Answer

It is quiet, because the fan motor sits up in the attic rather than on the ceiling of the room, so most of the sound stays out of the living space. There is no official sones rating for it, since the noise depends on how it is installed, things like the type and length of the duct and how far the motor sits from the intake. As a rule, venting with the motor mounted away in the attic is quieter than a fan mounted right in the room.

Question 36

What is SpectraLight Infinity and how does it achieve maximum light transfer without shifting colors?

Accepted Answer

SpectraLight Infinity is the material Solatube uses in its reflector and tubing, and it is the most reflective material in any tubular skylight, reflecting about 99.7 percent of the light that hits it. That means less than one percent of the daylight is lost each time it bounces down the tube. This matters most when the light is weak, in early morning, late afternoon, on cloudy days, or through the winter, when the daylight may bounce hundreds of times on its way down. Because so little is lost per bounce, the light still arrives bright at the bottom. Tubing with lower reflectivity can lose as much as 16 percent per bounce, so little usable light is left by the time it reaches the room. SpectraLight Infinity also carries the daylight's true color without tinting it, so what reaches your room is bright, clean, natural light.

Question 37

How are the extension tube sections fastened together?

Accepted Answer

Most Solatube® Daylighting Systems feature tubing with a specially designed notching system that allows one tube to telescope into the next, so they rarely have to be cut to length. High-quality foil tape is used to seal all tubing seams. This keeps bugs and dust from entering the system, ensuring maintenance-free operation. Tube sections are further reinforced by fastening them with provided self-tapping screws for structural integrity.

One exception is the Solatube SkyVault® Series, which features a patented Tab-Lock Connection System that guarantees proper assembly. Additionally, Tube Belts ensure structural integrity by cinching the tube connection to prevent gaps and provide a tapeless, self-sealing joint. This combination of features simplifies installation and reduces labor costs.

Question 38

What if the protective liner won't come off the inside of the tubes?

Accepted Answer

If the tubes have been left in the sun or exposed to heat, the protective lining may adhere to the tubing and become difficult to remove. If this occurs, the tubing will likely need to be replaced. For best results, un-installed tubing should be kept in the packaging until it is installed. Also, it should not be stored in areas with direct sunlight or excessive heat for long periods of time.

Question 39

Will a Solatube Daylighting System work with a Solatube Light and Ventilation Add-On Kit at the same time?

Accepted Answer

Yes. The Solatube® Light and Ventilation Kits can be added to the Solatube Daylighting System 160 DS model to create a dynamic 3-in-1 fixture that includes daylighting, night lighting and venting functions in one ceiling location.

Question 40

How much attic space is needed to install a Solatube Ventilation Add-On Kit?

Accepted Answer

A minimum of 12 1/2 in. (318 mm) between ceiling joists and a minimum of 12 in. (304 mm) of vertical clearance above the ceiling is required in order to use the Ventilation Add-On Kit. It is also important to note that service access is required to the fan motor assembly junction box.

Question 41

If a non-rechargeable battery is installed, will it damage the Solar Electric NightLight ?

Accepted Answer

Yes, damage can occur if a non-rechargeable battery is used. Using a non-rechargeable battery could pose a fire risk, and should be avoided.

Question 42

What happens if I close the Daylight Dimmer?

Accepted Answer

When the Daylight Dimmer is closed, it blocks about 98 percent of the daylight. That is usually enough for the NightLight's Dusk to Dawn sensor to still read daytime and stay off. On a very dark or stormy day, though, with the dimmer closed, the little light that remains can fool the sensor, and the NightLight may switch on during the day.

Question 43

Where can Solatube Daylighting Systems be installed?

Accepted Answer

The better question is where can’t they be installed? Solatube^® Daylighting Systems have been installed in virtually every type of residential and commercial application. See our residential and commercial showcases for examples.

Question 44

How do I replace the rechargeable batteries?

Accepted Answer

Remove the Decorative Fixture or Diffuser by twisting counterclockwise. Remove natural effect lens or softening effect lens by pulling on plastic tab.Reach inside the tube and gently lift up on the Solar Electric NightLight assembly to remove from the mounting bracket. Remove existing rechargeable AA batteries. Replace with two (2) new AA NiMH 1500 mAh 1.2V rechargeable batteries. Insert batteries to the (+) and (-) markings inside the battery pack.Reinstall Solar Electric NightLight onto mounting bracket.Replace effect lens and Decorative Fixture/Diffuser.

*Recycle or dispose of worn-out batteries in accordance with local and national regulations.

Question 45

Will the rechargeable batteries be fully charged by Solatube prior to installation?

Accepted Answer

All new Solar Electric NightLights shipped with rechargeable batteries with a partial charge and may last throughout the first night after being installed. One full daylight cycle is recommended to achieve a full charge.

Question 46

Can additional Solatube Accessories be installed with the Solar Electric NightLight?

Accepted Answer

Yes. The Ventilation Add-On Kit, the Daylight Dimmer and the Light Add-On Kit can all be installed in the same Solatube Daylighting System.

Question 47

What is the warranty for the Solar Electric NightLight?

Accepted Answer

The warranty for the system (panels, housing and LEDs) is for five (5) years.The batteries are not included in the warranty.

Question 48

How long does it take to charge the rechargeable batteries?

Accepted Answer

One full daylight cycle is recommended to fully charge the Solar Electric NightLight.

Question 49

Why is Specular Reflectance a better measurement of light output than Total Reflectance?

Accepted Answer

When light hits a surface, it is either absorbed or reflected, and reflected light goes one of two ways. Specular reflection keeps it in a tight, mirror like beam. Diffuse reflection scatters it in every direction. Total reflectance counts both kinds together, which is what makes it misleading. A surface can have a high total reflectance but scatter most of the light, and in a skylight tube that scattered light just bounces back out the top and never reaches the room. What actually matters for a light tube is specular reflectance, the mirror like kind that keeps light moving straight down the tube. Solatube's SpectraLight Infinity tubing has a specular reflectance up to 99.7 percent, so very little is lost on the way down. Since the light can bounce hundreds of times, even a few percentage points make a big difference in how much reaches your room, which is why specular reflectance, not total reflectance, is the number to compare across systems.

Question 50

What is seasonal consistency and why is it important?

Accepted Answer

Seasonal consistency means a skylight delivers about the same amount of daylight all year, in winter just as much as in summer. It matters because the sun sits low in the sky in winter and high in summer, and many tubular skylights capture that low winter light far less effectively. A room they fill with light in July can feel noticeably darker in January. Solatube daylighting systems are built to pull in the low winter sun as well as the high summer sun. The shape of the dome and its internal reflector redirect daylight down the tube no matter the angle it comes in at, so you get steady, reliable light in your rooms through every season.

Question 51

What is Color Temperature Maintenance and why is it important?

Accepted Answer

Color Temperature Maintenance, or CTM, is a measure of how well a skylight carries daylight down the tube without changing its color along the way. It matters because lower quality tubing can tint the light and give a room a slightly off or yellow cast, when what you want is the clean, true color of natural daylight. The SpectraLight Infinity tubing in a Solatube has a high CTM, so the light that reaches your room stays true to the daylight outside, with no color shift through the day or across the seasons.

Question 52

Can a Solatube Daylighting System be installed through a wall?

Accepted Answer

The Solatube^® International, Inc. roof components have been designed for installation at the roof level, not on a vertical wall. By installing the roof components on a vertical wall, the product warranty would be voided. However, installations of this type have been done successfully. We recommend a warranty from the installer to cover this type of application.

An application where the roof components are mounted on the roof and the tubing makes a 90 degree turn to allow the diffuser or Decorative Fixture to be mounted on an interior wall are within the bounds of the warranty.

For more information, please contact your local Solatube daylighting expert.

Question 53

Can Solatube Daylighting Systems be installed on a metal roof?

Accepted Answer

Yes. We offer three different options, depending on the type of roof and Solatube^® product you’re using.

Option one is a Metal Roof Kit that can be used in conjunction with our self-flashing systems on most standing seam metal roofs with seams that are less than 4 1/2 in. (114 mm) high. This is the most commonly used application for our Solatube Daylighting System 290 DS as well as our Solatube SolaMaster^® Series 330 DS and 750 DS. This is the only option for our Solatube SkyVault^® product for metal roofs of all types.

Option two is the curb cap used on a curb (made by others) where the curb is custom-fabricated to fit the metal roof profile. This is the most commonly used application for our 290 DS, 330 DS, 750 DS models, and the only option for our Solatube SkyVault^® Series product for metal roofs of all types.

Option three is the Solatube Metal Roof Flashing, which is available exclusively for our Solatube SolaMaster Series. Featuring an innovative triple-seal Dry-Lock technique, it can be adapted to fit virtually any standing seam roof profile.

See our Production Selection Guide and Technical Resources pages for more details.

It’s always recommended that you contact your local Solatube daylighting expert for specific application details.

Question 54

Will a Solatube Daylighting System work for a mobile or manufactured home?

Accepted Answer

Yes, dim interiors are common with mobile homes because carports and patio covers often shade the windows. Solatube^® Daylighting Systems overcome this issue by delivering light directly into the interior through the roof. Plus, installation is quick and easy because no structural modifications are required.

Question 55

How does the tube attach to the ceiling?

Accepted Answer

For residential applications

For Solatube^® Daylighting Systems, the bottom tube comes pre-assembled from the factory with integrated fastening clamps in the ceiling ring. For Solatube Smart LED™ Systems, the fastening clamps are attached to the High-Performance Amplifier rather than the bottom tube. Once inserted into the ceiling opening, the bottom tubing telescopes into the top tubing. The integrated fastening clamps secure the ceiling ring into the ceiling.

If using AuroraGlo™ or QuadraFrost™ Decorative Fixtures, please see Solatube Decorative Fixtures installation instructions appendix for additional details.

For commercial applications

If using the Solatube Brighten Up® Series or Smart LED System, refer to the above information for either suspended or hard ceiling applications.

For the Solatube SolaMaster^® Series, we offer a transition box in our Solatube SolaMaster Series 750 DS-C and 330 DS-C models. This allows for integration into a suspended, acoustical ceiling grid, replacing a typical 2 ft by 2 ft ceiling tile. The transition box also offers a trim lip so that it can be used in a hard ceiling.

For Solatube SolaMaster Series 750 DS-O and 330 DS-O models, our round open ceiling diffuser can be used in a hard or suspended ceiling. You may want to add an additional trim ring for cosmetics.

The Solatube SkyVault^® Series is not recommended for drop ceiling applications.

Question 56

Are the domes strong?

Accepted Answer

The domes used with most Solatube^® Daylighting Systems are injection-molded with impact modified acrylic. The high quality and durability of the material combined with the molding process produces a dome that creates a benchmark for the industry. For markets in High Velocity Hurricane Zones, the optional Shock Inner Dome is available to meet building codes. This material is required to pass stringent missile impact tests for hurricane threat areas. In the Solatube SolaMaster® Series, we also offer a military-grade dome for applications that require anti-terrorism blast testing.

The Solatube SkyVault^® Series dome, intended for commercial use, is made of high-impact, vacuum-formed polycarbonate that is 43 times stronger than acrylic. A different material is used with this model due to the dome’s massive 29 in. (74 cm) size. An acrylic dome with that diameter would be too flexible and not strong enough to withstand high impact conditions. This model is also available with a dual-glaze dome assembly that includes an outer and an inner dome for added durability.

Question 57

Is there a Ventilation Kit available?

Accepted Answer

The Solatube® Daylighting System 160 DS is available with an attractive optional Solatube Ventilation Add-On Kit. When the Solatube 160 DS is combined with a Ventilation Add-On Kit and a Solatube Light Add-On Kit, it becomes an attractive 3-in-1 ceiling fixture.

Quiet, remote in-line fan motor with opposing rotation to overcome pressure and increase speed and volume of airflow, even under extended duct runs
Fan motor moves up to 110 cubic feet (3 cubic meters) per minute
Optional Roof Vent Cap: Self-flashing design for easy installation. Gravity damper prevents back flow. Low profile in black color blends with roof.

Recommended for residential use only.

Question 58

When roofing, what is the best time to install a Solatube Daylighting System?

Accepted Answer

All Solatube^® products were designed with retrofit applications in mind. However, when dealing with a new roof installation or a re-roofing project, it’s recommended to coordinate with the roofer.

For residential applications

For typical shingle roofs, it is best to install after the new roof is in place. However, the Solatube Daylighting System can easily be installed at the same time the roof is going on in most cases.

When installing a Solatube Daylighting System on a tile roof, installation is usually done after the roof is completed. On hot mop applications, installation can be done during or after.

For commercial applications

For new construction or re-roofing projects, our Solatube daylighting experts often coordinate the installation of a Solatube Daylighting System with a professional roofer to ensure flashings or curbs are properly installed. This helps to maintain the roof warranty, if applicable. Since they are factory-trained on all Solatube products and experienced with installing on a wide variety of roof types, Solatube daylighting experts can provide valuable information on how to ensure a successful outcome.

Question 59

How long does it take to install a Solatube Daylighting System?

Accepted Answer

For residential applications

Solatube^® Daylighting Systems feature factory-assembled parts for faster, easier, more professional-looking installations. With this in mind, installing a Solatube Daylighting System on a shingle asphalt roof usually takes two hours or less. Other roof types (e.g., slate, tile, metal, concrete) may take slightly longer due to the roof material.

For commercial applications

Installation times can vary greatly depending on job site conditions, roof type, roof mount options, model and product configuration, and so on. Contact your Solatube daylighting expert for more information.

Question 60

What is the product warranty?

Accepted Answer

Under the product warranty, Solatube^® Daylighting System components are covered for 10 years, most electrical components for 5 years, and Solatube Smart LED™ electrical components for 3 years. For full warranty details, click here.

Question 61

Will a Solatube Daylighting System work when installed on the north side of a roof?

Accepted Answer

A Solatube^® Daylighting System works well on the north side of a roof. However, it performs even better when exposed to direct sunlight. For the best results, position the system where it will receive the most direct south-facing sunlight possible. To catch more direct rays, a turret extension can also be added to raise the dome height above the roof peak if on the north side of the roof.

The reverse is true in the southern hemisphere. There, a north-facing position is ideal.

Question 62

Is there an electric light for nighttime use?

Accepted Answer

You can get day and night lighting in one unit with the revolutionary Solatube^® Smart LED™ System. Uniting daylighting with LEDs, it can save you up to 94% in energy costs. Featuring proprietary SunSense™ Technology, the system monitors daylight levels and allows the LEDs to activate automatically only when needed. The optional Occupancy Sensor makes the system even more energy efficient by preventing the LEDs from turning on unless an underlit area is occupied.

For the Solatube Brighten Up^® Series, you can also get day and night lighting using one of our light kit options that can be wired to a wall switch.

Compact Fluorescent Light Add-On Kit

Add a dedicated compact fluorescent fixture to use with the Solatube Daylighting System as a recessed light fixture at night. Accepts one 26-watt compact fluorescent lamp (GX24q-3 Base, 26W 4-pin). Meets California Title 24 bath light requirements. Two fixtures may be used with the Solatube Daylighting System 290 DS.

Universal Light Add-On Kit with Medium Screw-in Base

Add on a light fixture to use the Solatube Daylighting Device as a recessed light fixture at night. The Solatube Daylighitng System 160 DS Light Add-On Kit accepts (1) Compact Fluorescent Lamp, Medium Base - 23 Watt Maximum, Total Maximum Length 4 3/4 in (120 mm). The Solatube 290 DS Light Add-On Kit accepts two Compact Fluorescent Lamps, Medium Base - 23 Watt Maximum, Total Maximum Length 4 3/4 in (120 mm).

Question 63

How to reduce the possibility of condensation when installing a Solatube Daylighting System?

Accepted Answer

Understanding the cause (e.g., poor ventilation) is the first step toward preventing condensation. Listed below are a number of steps that can be taken to reduce the potential for moisture buildup.

1. Always make sure round holes are cut in the roof deck, whether using the self-flashing or the curb-mounted cap. Square holes cut in the roof deck will let too much warm, moist air into the flashing or curb cavity.

2. Install a flashing insulator or curb insulator. These reduce the amount of warm air from the building's interior that contacts the cold, metal interior of the flashing. On a curb-mounted unit, attach the curb insulator to the interior base of the curb, centering it over the round hole in the roof deck.

3. For self-flashing units, pack insulation material into the space between the flashing and the tubing to reduce the volume of warm, interior air that contacts the cold metal of the flashing. With curb-mounted units, push insulation into the curb cavity. Filling the curb cavity's air space will equalize the temperature and reduce the occurrence of condensation. The Solatube® Curb Cap Insulation Kit is also recommended and provides R-6 rigid insulation at the underside of the curb cap. For the Solatube SkyVault® Series, rigid insulation is pre-installed in the roof assembly.

4. If a curb or flashing insulator is not used, another option is to seal the penetration where the tubing comes through the roof deck with an expanding foam sealant, insulation, or other similar product. This will reduce the chances of warm, moist air making contact with the interior of the flashing or curb cavity.

5. Ensure the dome is correctly attached to the flashing or curb cap, including dome seals in certain models. Solatube Daylighting Systems are designed to allow some air transfer from the interior of the system to the exterior. This allows moist air to vent, while enabling any droplets of water that may form on the dome to escape

6. In extreme cold climates, wrap the tubing in insulation. For best results, use foil-faced insulation. Be sure to insulate the entire tube run from the roof deck to the ceiling plane, leaving no gaps in the insulation. You can also use this method in extremely moist environments in an open ceiling application.

7. If a vapor barrier is present when penetrating the roof deck, ensure that it is maintained and sealed off once the Solatube Daylighting System has been installed.

For more details on how to address condensation, please contact your Solatube daylighting expert.

Question 64

Can the Solatube Daylighting System run down the outside of a structure and turn 90 degrees through a wall into the interior?

Accepted Answer

The tubing of a Solatube^® Daylighting System is not designed for exposed exterior applications. As long as the exterior tube runs are encased for added protection, however, this type of application is possible. To accommodate multiple 90-degree turns, angle adapters are available that provide maximum flexibility while resulting in minimal light loss. Also, keep in mind that the roof components must be supported if they reside on the side of the structure rather than the roof.

Note: this type of application may void the warranty. Consult your Solatube daylighting expert for more information.

Tubular Skylights

Solatube Brighten Up Series

Natural Light Designed Around Your Home

Choose the Right Solatube Size for the Room

Solatube 160 DS

Solatube 290 DS

Solatube Fixture Options

ThinLine Vusion

Contour TierDrop

Contour OptiView Frost

Add Ons

LED light Add-On Kit

Daylight Dimmer™

Ventilation Add-On Kit

Shock Inner Dome

Leak Proof Roof Flashings

Flat Roof Flashing

Asphalt Shingle Flashing

Shake/Slate Roof Flashing

Metal Roof Flashing

Flat Tile Roof Flashing

Tile Roof Flashing

Specialty Items

Contour JustFrost Square Fixture

ThinLine OptiView Square Fixture

ThinLine SoftView Square Fixture

290 DS Plus

How a Tubular Skylight Works

Sunlight Is Captured on Your Roof

Light Is Redirected and Enhanced

Light Travels Through our Ultra Reflective Tubing

Beautiful, Natural Light Fills the Room

After Sunset, It Keeps Working

Solatube Tubular Skylights vs. Traditional Skylights

Stunning Results

Natural Daylight Transforms Your Home

Kitchen

Hallway

Bathroom

Closet

Installation: What to Expect

Discover the Benefits of Natural Daylight

Built for Better Design and Comfort

Health

Happiness

Well-Being

Frequently Asked Questions

What is the ultraviolet (UV) and infrared (IR) impact of installing a Solatube Daylighting System? +

What kind of roofs can Solatube tubular skylights be installed on? +

Are Solatube tubular skylights hurricane-rated? +

Are Solatube tubular skylights better than Velux sun tunnels? +

What makes Solatube brighter than other tubular skylights? +

Do skylights make your house hot? +

Can a Solatube Daylighting System be installed horizontally? +

What is the approximate light coverage of a Solatube Daylighting System? +

Are Solatube Daylighting Systems maintenance-free? +

Can Solatube tubular skylights be used in cloudy weather? +

Is there a way to turn off or "block out" a Solatube Daylighting System? +

Can Solatube Daylighting Systems be installed in a shower? +

Can a Solatube Daylighting System be used for multi-story applications? +

Can I split the tubing and light two rooms from only one dome? +

How does a Solatube Daylighting System work? +

How durable is the Solatube Daylighting System? +

How does a Solatube Daylighting System compare to a traditional skylight? +

On what roof types can Solatube Daylighting Systems be installed? +

Do Solatube tubular skylights leak? +

Are tubular skylights easy to install for retrofit projects while maintaining a watertight roof connection? +

What if there is no attic or plenum space? +

Can I install Solatube products myself? +

How do I remove my Solatube Daylighting System diffuser or Decorative Fixture? +

What length can the tube be? +

Will a Solatube Daylighting System work in hot climates like Florida? +

Can Solatube Daylighting Systems tolerate very heavy rain? +

What happens on a cloudy day? +

Will a Solatube Daylighting System work in cold climates and northern latitudes? +

Are there any issues with leaks? +

What happens on full moon nights? +

What happens if the dome gets covered with snow? +

How can condensation be managed? +

How much does a Solatube Daylighting System cost? +

Daylight Dimmer^™